Edouaed calix



2 Sheets-Sheet 1'.-

' (No Model.)

B. OALIX.

MUSIC STOOL.

No. 267,325. Patented Nov. 14, 1882.

r, Washinglun. D (L (No Model.)

2 Sheets--Sheet 2.

NE. GALIX.

MUSIC STOOL.

PatentedNov. 14 1882.

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STATES EDOUARD OALIX, OF ZURICH, SWITZERLAND.

MUSIC-STOOL.

SPECIFICATIQN formingpart of Letters Patent No. 267,325, dated November14, 1882, Application filed Juno 6, 1882. (No model.)

I 0 all whom it may concern Be it known that I, EDOUARD GALIX, ofZurich, Switzerland, have invented certain new and useful Improvementsin Music-Stools; and I do hereby declare the following to be afull,clear, and exact description of the same, reference being had to theaccompanyingdrawings, in which- Figures 1, 2, and 3 show in elevationthe mechanism for raising and lowering the seatframe in differentpositions. Fig. 4 is atop plan ofthe same with the spring removed. Fig.5 is an elevation ofa complete music-stool constructed in accordancewith myinvention. Fig. 6 is a plan view of the seat-frame with the topremoved. Figs. 7 to 13 are views in detail of the various parts of theraising and lowering mechanism.

Similar letters of reference in the several figures denote the sameparts.

Music-stools as ordinarily constructed consist of a round top or seatproper, having no back,

mounted centrally upon a spindle which is supported in a suitable baseor socket, said spindle and socket being correspondingly screwthreadedto permit the adjustment up and down of the spindle and the seat carriedthereby; but this form of stool is objectionable, because after long usethe spindle and socket become worn, causing an oscillation andunsteadiness of the seat when raised to any extent.

My present invention has for its object to provide a music-stool havinga back, and which shall at all times be evenly and firmly supported inany position to which it may be adjusted; and to this end it consistsofastool constructed and operated substantially as I will now proceed todescribe, and point out particularly in the claims at the end of thisspecification.

Referring to the drawings, the seat-frame, as shown in Figs. 5 and 6, isconstructed of rectangular form, supported by legs at its four corners,and provided with a rectangular adj ustable top or seat proper, A,suitably upholstered and provided with a back, as shown at A.

Secured to the front and rear bars respectively of the seat-frame aresimilarly-formed metal plates to b, as shown in Fig. 6, each beingconstructed, as shown in Figs. 7 and 8,with dovetail grooves 0 near theends for the reception of racks B, secured to the movable top of theseat, and projecting down therefrom, as

{ shownin Fig. 5, acentral dovetailed recess,f, in which is adapted toslide a sliding plate, g, a lateral circular perforation, h, for thepassage of the operating-shaft 0, two longitudinal slots, it", for apurpose to be presently explained, and two laterally-projecting pins, 11, arranged on opposite sides of the recess f and serving as the pivotsof two oscillating blocks, or m, as hereinafter explained.

As the mechanism on the front part of the seat-frame is a counterpart ofthat upon the rear part and operates simultaneously therewith, it willonly be necessary to describe one set of mechanism.

(lo-operating with the plate a are two sliding bolts, 7c, the inner endsof which lap past each other and terminate on opposite sides of therecess f, and which are supported, so as to permit of their longitudinalmovement, by means of offsets or lugs n, extending into the longitudinalslots t' of the plate a. The outer ends of these slides are providedwith projections or teeth q g, which, when the slides are projectedoutward, are adapted to engage with the sliding racks B B and lock themin position. The inner ends of the slides are also provided withlaterally-projectin g studs or pins 0 0, upon which are pivoted leversn, whose inner ends are bifurcated and embrace pins 23 t on the slidingplate 1 and whose outer ends are adapted to engage with the teeth of theracks B B when the bolts It k are retracted. The blocks m m,which aremounted on the pins Z Z of the plate a, are slotted, so as to alsocmbrace the pins t t on the movable slide g, and the rear portions ofthese oscillating blocks are adapted to co-operate with the dependingarms of the inner portions of the bolts 76 It, as shown in Figs. 1, 2,and 3.

Secured to an offset on the bolt is is a longitudinal rod, 4, whose freeend plays through a guide, 8, on the inner side of the bolt 70, and uponthis rod 1' is arranged a spiral spring, to, .which operates to keep theouter ends of both bolts projected.

The vertical moving slide g is provided with a cam-shaped slot, in whichplays a crank-arm or can1,z, secured rigidly to the operatingcrossshaft0, as shown in Figs. 1, 2, and 3. The outer end of the operating-shaftis preferably square to receive the key or operating-handle d.

When the seat proper is adjusted at its nor- ICO mal height the teeth gg on the outer ends of the bolts 70 k are held by the tension of thespring 10 in engagement with the racks B B, and the other parts of themechanism are in the position shown in Fig. 1.

YVhen it is desired to raise the seat the key or handle d is turned soas to rotate the shaft 0 to the left. This causes the cams z on theshaft to lift the vertical slides g, and the movement of said slidescauses their pins t to first tilt the blocks on m and cause the latterto move the bolts It It" inward out of engagement with the racks B B,and then cause the pins t t to engage with the fork or bifurcated innerends, at a, of the levers n n and rock said levers, so as to depresstheir outer ends and engage them with the racks. Then, upon turning theshaft backward to the position shown in Fig. 1, the levers a n will befirst tilted on their pivots, so as to raise the racks, and then bedisengaged from the racks, while the bolts willbe projected so as toengage with the racks and hold them at their new point of adjustment.

To lower the seat, instead of raising it, the handle or key d is firstturned to the right, so as to cause the cams z to throw the slides g gdownward, instead of upward, and cause the pins, blocks, levers, andhorizontal bolts to opcrate upon the racks to lower them, as will bereadily understood from the foregoing description. Leaf-springs as maybe employed to assist in returning the levers n n to their normalhorizontal position, if desired.

The lowering and raising of the racks are accomplished tooth by tooth,and where it is desired to adjust the racks more than one tooth in thesame direction the operating-handle is turned first to the right andthen to the left from the normal point, or vice versa, until the resultis accomplished.

It will be seen that a music-stool constructed in accordance with myinvention can be raised and lowered with facility to adapt it to personsof different height, and that in whatever position it may be adjusted itwill afford a firm and steady seat, free from the oscillations andunsteadiness observable in the ordinary form of music-stool.

Having thus described my invention, I claim as new- 1. The combination,with the seat-frame, of the plates a I), constructed as described, ofthe slides g g, having the pins t t, means for raising and lowering saidslides, the pivoted blocks m m, and the laterally-moving bolts 7; 70,substantially as described.

2. The combination, with the seatframe, of the plates a b, constructedas described, of the vertically-moving slides g 9, having the pins t t,the rotatable cross-sh aft and the cams upon it for cooperating withsaid slides, the laterally-moving bolts, the levers n n, pivoted to thelaterally-moving bolts, and the racks depending from the seat proper,the whole constructed and operating substantially as described.

3. The combination, with the racks depending from the seat proper, ofthe laterally-moving bolts, the oscillating blocks, and means foroscillating the said blocks to retract the bolts, and the springs forprojecting the bolts into engagement with the racks, substantially asdescribed.

4. The combination, with the racks depending from the seat proper, ofthe laterally-moving locking-bolts, the levers pivoted to saidlocking-bolts, the springs for projecting the laterally-sliding bolts,the blocks, and the vertically-moving slide and its pins for retractingsaid bolts and operating the levers to raise or lower the racks,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDOUARD oamx. I

Witnesses:

G. F. BENNIGHOF, CARL HOFMANN.

